Solved

Change Access Databse Password

Posted on 2006-07-23
3
306 Views
Last Modified: 2012-05-05
Hi Experts
How I can Change MSAccess Password In Delphi?
0
Comment
Question by:mahdiparak
3 Comments
 
LVL 9

Expert Comment

by:sun4sunday
ID: 17163162
http://www.experts-exchange.com/Programming/Programming_Languages/Delphi/Q_21080111.html

copying the solution

var
  db1, db2, fp1, fp2 : string;
begin
  db1:='c:\test\test.mdb';    // original flename
  db2:='c:\test\new.mdb';   // new filename
  fp1:='password';        //original file password
  fp2:='password';       //new file password
  try
    StatusBar.SimpleText:='Loading driver...';
    v := CreateOLEObject('JRO.JetEngine');
    try
      v.CompactDatabase('Provider=Microsoft.Jet.OLEDB.4.0;Data Source=' + db1 +
                        ';Persist Security Info=False' + fp1,
                        'Provider=Microsoft.Jet.OLEDB.4.0;Data Source=' + db2 +
                        'x; Jet OLEDB:Engine type=5'+ fp2);
    except
    on E:Exception do
           ShowMessage(E.Message);
    end;
  finally
    v := Unassigned;
    StatusBar.SimpleText:='Done.';
  end;
end;

sun4sunday
0
 
LVL 28

Expert Comment

by:TName
ID: 17163173

Hi, are you using ADO? Try

ALTER DATABASE PASSWORD MyNewPassword MyOldPassword

e.g.:
ADOCommand1.CommandText := 'ALTER DATABASE PASSWORD MyNewPassword MyOldPassword';
ADOCommand1.Execute;

see:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnacc2k/html/acadvsql.asp

and you might want to have a look at
http://www.experts-exchange.com/Programming/Programming_Languages/Delphi/Q_21900292.html

0
 
LVL 26

Accepted Solution

by:
Russell Libby earned 500 total points
ID: 17163341
Another alternative example.

Russell

----

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls, ComObj, ActiveX; // Include Variants for D6 and up

type
  TForm1         = class(TForm)
     Button1:    TButton;
     procedure   Button1Click(Sender: TObject);
  private
     // Private declarations
  public
     // Public declarations
  end;

var
  Form1:         TForm1;

implementation
{$R *.DFM}

const
  adModeShareExclusive =  12;

function UpdateDBPassword(FileMDB: String; OldPassword, NewPassword: String): Boolean;
var  ovConn:        OleVariant;
begin

  // Create ADO connection
  ovConn:=CreateOleObject('ADODB.Connection');
  try
     // Set exclusive mode
     ovConn.Mode:=adModeShareExclusive;
     try
        // Open the database
        ovConn.Open(Format('Provider=Microsoft.Jet.OLEDB.4.0;Data Source="%s";Jet OLEDB:Database Password="%s"', [FileMDB, OldPassword]));
        // Update the password
        ovConn.Execute(Format('ALTER DATABASE PASSWORD `%s` `%s`', [NewPassword, OldPassword]));
        // Close the connection
        ovConn.Close;
        // Success
        result:=True;
     except
        // Exception, return failure
        result:=False;
     end;
  finally
     // Clear the object reference
     ovConn:=Unassigned;
  end;

end;

function SetDBPassword(FileMDB: String; Password: String): Boolean;
var  ovConn:        OleVariant;
begin

  // Create ADO connection
  ovConn:=CreateOleObject('ADODB.Connection');
  try
     // Set exclusive mode
     ovConn.Mode:=adModeShareExclusive;
     try
        // Open the database
        ovConn.Open(Format('Provider=Microsoft.Jet.OLEDB.4.0;Data Source="%s"', [FileMDB]));
        // Update the password
        ovConn.Execute(Format('ALTER DATABASE PASSWORD `%s` NULL', [Password]));
        // Close the connection
        ovConn.Close;
        // Success
        result:=True;
     except
        // Exception, return failure
        result:=False;
     end;
  finally
     // Clear the object reference
     ovConn:=Unassigned;
  end;

end;

procedure TForm1.Button1Click(Sender: TObject);
begin

  // Set initial password
  if SetDBPassword('c:\db1.mdb', 'Testing') then
  begin
     // Update password
     UpdateDBPassword('c:\db1.mdb', 'Testing', 'New Password');
     // Remove the password
     UpdateDBPassword('c:\db1.mdb', 'New Password', '');
  end;

end;

0

Featured Post

Live: Real-Time Solutions, Start Here

Receive instant 1:1 support from technology experts, using our real-time conversation and whiteboard interface. Your first 5 minutes are always free.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
code issue 8 129
Delphi Form ownership 4 88
I want to use librsync in my Delphi backup application. 3 47
firemonkey Android Listview Sort items 7 10
Creating an auto free TStringList The TStringList is a basic and frequently used object in Delphi. On many occasions, you may want to create a temporary list, process some items in the list and be done with the list. In such cases, you have to…
Introduction Raise your hands if you were as upset with FireMonkey as I was when I discovered that there was no TListview.  I use TListView in almost all of my applications I've written, and I was not going to compromise by resorting to TStringGrid…
Windows 10 is mostly good. However the one thing that annoys me is how many clicks you have to do to dial a VPN connection. You have to go to settings from the start menu, (2 clicks), Network and Internet (1 click), Click VPN (another click) then fi…
Established in 1997, Technology Architects has become one of the most reputable technology solutions companies in the country. TA have been providing businesses with cost effective state-of-the-art solutions and unparalleled service that is designed…

776 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question